/Engine/Source/Runtime/Engine/Public/Animation/AnimCurveTypes.h
Convert current curves to Additive (this - BaseCurve) if overlapping entries are found
template<typename OtherAllocator, typename OtherElementType> void ConvertToAdditive ( const [TBaseBlendedCurve](API\Runtime\Engine\Animation\TBaseBlendedCurve)< OtherAllocator, OtherElementType > & BaseCurve )